The colors are faded, so the woman's face appears pasty, the background is hard to distinguish from the person, and her dress is dull. Now that the photo is color balanced, correcting this is primarily an issue of color saturation. Picture Window allows you to fix saturation in two ways. The easy way is to use the Saturation command. This command gives you a slider to increase or decrease overall saturation. If you back the saturation down to it's lowest level, you get a monochrome image. We're going to do it the slightly more difficult way using the Color Curves command. Below is a screen shot from Picture Window:
The Color Curves command provides you with curves or histograms very similar to those seen in the brightness command. I find it easier to deal with the histograms, so similar to the brightness curves, I switch to the histogram. In the above screen shot, as usual, the original is on the left and the modified image is on the right. The dialog box shows the histogram. You'll see the "HSV" in the color space box; this stands for Hue, Saturation, Value. Picture Window will tell you more than you want to know about this color space - suffice it to say that I am using this so that I can manipulate saturation. The next box after color space shows "S", meaning that we are working on, and seeing a histogram for saturation. The right side of the histogram is maximum saturation. As you can see from the histogram, this is a low saturation photo. Here, I set the upper level of the saturation curve higher, making the whole photo a little more saturated. I also used the sampler (eye dropper icon) to sample the level of saturation of her lip, which is represented by the control point in the middle of the histogram (shift-click on the point to add the control point). I then pushed the saturation of the lip more than I did the rest of the photo. This brought out the color of her lips and her flesh tones, without getting the higher saturated points overly saturated. I used this command instead of the saturation command so that I could affect saturation differently for different parts of the photo.
So, after this command, the photos looks like this:
Only a few minor details to take care of. She's a bit rotated, and I don't want the border on the photo.